Inch-lbs to Nm Converter
Convert torque between inch-pounds and newton-meters with precise calculations
Convert Torque Units
Imperial torque unit (pound-force × inches)
SI metric torque unit (force × distance)
Conversion Results
Additional Torque Units
Conversion factors: 1 Nm = 8.85 in-lbs, 1 in-lb = 0.113 Nm
Formula: Nm = in-lbs ÷ 8.85, in-lbs = Nm × 8.85
Quick Reference
Inch-lbs to Nm Conversion Table
| Inch-pounds (in-lbs) | Newton-meters (Nm) | Foot-pounds (ft-lbs) |
|---|---|---|
| 1 | 0.113 | 0.083 |
| 5 | 0.565 | 0.417 |
| 10 | 1.130 | 0.833 |
| 25 | 2.825 | 2.084 |
| 50 | 5.650 | 4.167 |
| 100 | 11.299 | 8.334 |
| 200 | 22.599 | 16.668 |
| 500 | 56.497 | 41.670 |
| 1000 | 112.994 | 83.340 |
Common Applications
Automotive
Engine bolts, lug nuts, small fasteners
Typical: 10-150 in-lbs
Electronics
Circuit boards, delicate components
Typical: 2-15 in-lbs
Aerospace
Precision fasteners, instruments
Typical: 5-100 in-lbs
Torque Tips
Always use the correct torque specification for your application
Too much torque can strip threads or break components
Too little torque may allow fasteners to loosen
Use a calibrated torque wrench for precision work
Inch-lbs are ideal for small, delicate applications
Understanding Torque Units: Inch-lbs vs Newton-meters
What are Inch-pounds (in-lbs)?
Inch-pounds (in-lbs or lb-in) is an imperial unit of torque measurement. It represents the rotational force applied at a distance of one inch from the center of rotation with a force of one pound-force.
When to Use Inch-pounds
- •Small automotive components and fasteners
- •Electronic equipment assembly
- •Precision instruments and devices
- •Aerospace and aviation applications
What are Newton-meters (Nm)?
Newton-meters (Nm) is the SI (metric) unit for torque. It represents the torque created by a force of one newton applied at a perpendicular distance of one meter from the axis of rotation.
Conversion Formula
Nm = in-lbs ÷ 8.85
in-lbs = Nm × 8.85
Conversion factor: 1 Nm = 8.85 in-lbs
Inverse: 1 in-lb = 0.113 Nm
Real-world Examples
Spark Plug
Typical torque: 180-240 in-lbs
Equivalent: 20.3-27.1 Nm
Electronics Screw
Typical torque: 4-8 in-lbs
Equivalent: 0.45-0.90 Nm
Carburetor Bolt
Typical torque: 120-150 in-lbs
Equivalent: 13.6-16.9 Nm